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WO2018107368A1 - Procédé et dispositif d'établissement de connexion pour une transmission de données - Google Patents

Procédé et dispositif d'établissement de connexion pour une transmission de données Download PDF

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Publication number
WO2018107368A1
WO2018107368A1 PCT/CN2016/109710 CN2016109710W WO2018107368A1 WO 2018107368 A1 WO2018107368 A1 WO 2018107368A1 CN 2016109710 W CN2016109710 W CN 2016109710W WO 2018107368 A1 WO2018107368 A1 WO 2018107368A1
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WO
WIPO (PCT)
Prior art keywords
network element
terminal
request message
management network
connection
Prior art date
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Ceased
Application number
PCT/CN2016/109710
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English (en)
Chinese (zh)
Inventor
舒林
埃雷罗⋅克里斯蒂安
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2016/109710 priority Critical patent/WO2018107368A1/fr
Publication of WO2018107368A1 publication Critical patent/WO2018107368A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to a method and an apparatus for establishing a connection for data transmission.
  • IoT Internet of Things
  • NB-IoT Narrowband Internet of Things
  • the prior art optimizes some existing network functions in EPS, but this optimization mainly lies in the air interface resources between the IoT terminal and the core network element, and the inventor finds In the prior art, during the connection establishment process of the data transmission between the terminal and the network side, the delay of the CIoT data transmission is caused, and at the same time, the signaling overhead of the terminal is large and the power consumption is high.
  • connection method for data transmission including:
  • the terminal sends a service request message to the mobility management network element, where the service request message includes indication information and connection establishment request information, where the indication information is used to instruct the mobility management network element to establish a connection for data transmission, and the connection is established.
  • the request information is used by the mobility management network element to initiate a setup request for the connection of the data transmission;
  • the terminal establishes a connection of the data transmission with the mobility management network element.
  • the method before the terminal sends a service request message to the mobility management network element, the method further includes:
  • the terminal acquires request information that the application on the terminal needs to send uplink data;
  • the terminal receives the paging message sent by the mobility management network element, where the paging message includes indication information, where the indication information is used to indicate that the mobile management network element of the terminal has downlink data sent to the terminal.
  • the service request message includes: an extended service request message, a data service request message, a control plane service request message, or a signaling plane service request message.
  • the connection establishment request information includes:
  • PDN packet data network
  • the indication information includes: an empty bearer identifier, an empty connection context identifier, a connection establishment service type, or a session management message service type.
  • the service request message includes a non-access stratum NAS message container, and the NAS message container includes the connection setup request information.
  • connection establishment method for data transmission including:
  • the mobile management network element receives the service request message sent by the terminal, where the service request message includes indication information and connection establishment request information, where the indication information is used to instruct the mobility management network element to establish a connection for data transmission, the connection Establishing request information for the mobile management network element to initiate a setup request for the connection of the data transmission;
  • the mobility management network element establishes a connection for the data transmission for the terminal according to the connection establishment request information.
  • the method before the mobile management network element receives the service request message sent by the terminal, the method further includes:
  • the mobility management network element sends a paging message to the terminal, where the paging message includes indication information, where the indication information is used to indicate that the mobile management network element of the terminal has downlink data sent to the terminal.
  • the mobility management network element sends a paging message to the terminal, including:
  • the mobility management network element Receiving, by the mobile management network element, a connection establishment request for data transmission sent by the preset network element; the mobility management network element sending a paging message to the terminal according to the connection establishment request sent by the preset network element;
  • the mobile management network element receives the indication information of the downlink data transmission on the network side that is sent by the preset network element; the mobility management network element sends the paging message to the terminal according to the indication information sent by the preset network element. ;
  • the preset network element includes: a gateway network element or a network element having a service capability opening function.
  • the service request message includes: an extended service request message, a data service request message, a control plane service request message, or a signaling plane service request message.
  • the establishing the connection of the data transmission comprises:
  • the indication information includes: an empty bearer identifier, an empty connection context identifier, a connection establishment service type, or a session management message service type.
  • the service request message includes a non-access stratum NAS message container, and the NAS message container includes the connection setup request information.
  • an embodiment of the present application further provides a terminal, including:
  • a transmitter configured to send a service request message to the mobility management network element, where the service request message includes indication information and connection request information, where the indication information is used to instruct the mobility management network element to establish a connection for data transmission, where The connection request information is used by the mobility management network element to initiate a connection for establishing a data transmission;
  • a processor configured to establish a connection of the data transmission with the mobility management network element.
  • the terminal further includes a receiver
  • the receiver is configured to acquire request information that an application on the terminal needs to send uplink data;
  • the receiver is configured to receive a paging message sent by the mobility management network element.
  • the service request message includes: an extended service request message, a data service request message, a control plane service request message, or a signaling plane service request message.
  • the connection establishment request information includes:
  • the indication information includes: an empty bearer identifier, an empty connection context identifier, a connection establishment service type, or a session management message service type.
  • the service request message includes a non-access stratum NAS message container
  • the NAS message container contains the connection establishment request information.
  • the embodiment of the present application further provides a mobility management network element, including: a communication interface, configured to receive a service request message sent by the terminal, where the service request message includes indication information and connection establishment request information, The indication information is used to instruct the mobility management network element to establish a connection for data transmission, where the connection establishment request information is used by the mobility management network element to initiate a connection establishment request for the data transmission;
  • a processor configured to establish, by the terminal, the connection of the data transmission according to the connection establishment request information.
  • the mobile management network element mobile management network element is in a possible design, the communication interface is further configured to send a paging message to the terminal, the paging message includes indication information, and the indication information is used to indicate the terminal.
  • the mobility management network element has downlink data sent to the terminal.
  • the communication interface is further configured to receive a connection establishment request for data transmission sent by a preset network element, and send the connection establishment request sent by the preset network element to the terminal. Paging message
  • the communication interface is further configured to receive indication information that the network side has a downlink data transmission sent by the preset network element, and send a paging message to the terminal according to the indication information sent by the preset network element;
  • the preset network element includes: a gateway network element or a network element having a service capability opening function.
  • the service request message includes: an extended service request message, a data service request message, a control plane service request message, or a signaling plane service request message.
  • the processor is further configured to:
  • the indication information includes: an empty bearer identifier, an empty connection context identifier, a connection establishment service type, or a session management message service type.
  • the service request message includes a non-access stratum NAS message container, and the NAS message container includes the connection setup request information.
  • FIG. 1 is a schematic diagram of a system architecture according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a connection establishment method for data transmission according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of a connection establishment method for data transmission according to still another embodiment of the present application.
  • FIG. 4 is a schematic diagram of a connection establishment method for data transmission according to still another embodiment of the present application.
  • FIG. 5 is a schematic diagram of a connection establishment method for data transmission according to still another embodiment of the present application.
  • FIG. 6 is a flowchart of a method for establishing a connection for data transmission according to still another embodiment of the present application.
  • FIG. 7 is a flowchart of a method for establishing a connection for data transmission according to still another embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a mobility management network element according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of a terminal according to an embodiment of the present application.
  • FIG. 11 is a schematic diagram of a mobility management network element according to an embodiment of the present application.
  • the 3rd Generation Partnership Project (3GPP) established the research project CIoT in the Release 13 stage.
  • the EPS optimization of 3GPP mainly for CIoT includes the following three schemes:
  • Control plane optimization The control plane signaling in the EPS network is used to control the transmission of CIoT user data between the user plane and the user equipment (UE). There is no need to establish between the terminal and the network elements of the core network.
  • the corresponding air interface carries the context to improve the data transmission rate and save air interface radio resources.
  • RRC Radio Resource Control
  • the initial attachment does not establish a default PDN connection: the IoT terminal may not establish a default PDN connection when initially attaching, that is, the IoT terminal may remain in the registered state without establishing any PDN connection. Thereby realizing the rapid registration of the Internet of Things terminals and optimizing the utilization of network resources.
  • the optimization of the control plane and the optimization of the user plane are mainly to optimize the air interface resources between the terminal and the core network element, and for the CIoT user data transmission, including the Internet Protocol (IP) data packet.
  • IP Internet Protocol
  • a PDN connection includes one
  • the default EPS bearer context, or one PDN connection includes one or more dedicated EPS bearer contexts, to enable transmission of CIoT user data.
  • the establishment of the PDN connection and the EPS bearer context must be initiated when the terminal is in the connected state, that is, for the terminal in the idle state, if the EPS bearer context is to be established to implement the transmission of CIoT data, it must first Initiating an initial Non-Access Stratum (NAS) signaling flow causes the terminal to change from an idle state to a connected state.
  • NAS Non-Access Stratum
  • the terminal may remain in a registered state without establishing any PDN connection, but for such an idle state terminal:
  • the terminal Before transmitting any uplink CIoT data, the terminal must first initiate the initial NAS signaling flow from the idle state to the connected state, and then initiate a PDN connection establishment procedure to establish an EPS bearer context to implement uplink CIoT data transmission;
  • the network side Before transmitting any downlink CIoT data, the network side needs to first trigger a request for PDN connection establishment to the mobility management network element, and then the mobility management network element initiates paging to the terminal, and the terminal initiates an initial NAS signaling procedure for paging response. And from the idle state to the connected state, and finally initiate the PDN connection establishment process to establish an EPS bearer context to implement downlink CIoT data transmission.
  • the embodiment of the present application provides a connection establishment method and device for data transmission.
  • the terminal involved in the embodiment of the present application may be an Internet of Things terminal that accesses the mobile communication network through the NB-IoT access technology, or an Internet of Things terminal that accesses the mobile communication network through other Internet of Things access technologies.
  • These IoT terminals have application features such as simple functions, low power consumption, and infrequent user data transmission, and typically can be smart meters with wireless communication functions, smart home appliances, handheld devices, in-vehicle devices, wearable devices, computing devices, or Other processing devices connected to the wireless modem, and so on.
  • the mobility management network element involved in the embodiment of the present application may be a Serving GPRS Support Node (SGSN) in a 2G or 3G network, and a Mobility Management Entity (MME) in a 4G network. ), Cellular IoT Serving Gateway Node (C-SGN), control plane function network element in 5G network, and so on.
  • the gateway network element involved in the embodiment of the present application may be a gateway general packet radio in a 2G or 3G network.
  • Service Provider Support Node (GGSN) PDN Gateway PDN GW, Service Gateway S-GW, Service Capability Exposure Function (SCEF) network element in 4G network, User plane function network in 5G network Yuan and so on.
  • GGSN Service Provider Support Node
  • PDN Gateway PDN GW Service Gateway S-GW
  • SCEF Service Capability Exposure Function
  • a PDN connection when data is transmitted between the terminal and the mobility management network element, a PDN connection needs to be established between the terminal and the mobility management network element, and a PDN connection may be a default EPS bearer context.
  • the PDP context may be established between the terminal and the mobility management network element, where the data is transmitted between the terminal and the mobility management network element in the 2G or 3G network.
  • the data transmission connection is established in the 4G network by using the mobile management network element in the terminal and the network side as an example.
  • the embodiment of the present application is not limited thereto.
  • the terminal is in a registration state and the terminal does not have a connection context for data transmission.
  • the terminal When the terminal acquires the request message sent by the application that needs to send the uplink user data to the network side, or when the terminal receives the paging request message sent by the mobility management network element in the network side, the terminal sends a service request message (Service Request to the mobility management network element, wherein the service request message includes indication information and connection establishment request information, the indication information is used to instruct the mobility management network element to establish a connection context for data transmission, the connection establishment request information is used for mobile
  • the management network element initiates a setup request for a connection for data transmission.
  • the connection establishment request information may be a NAS message container.
  • the connection establishment request information may be an NAS message container as an example.
  • the service request message may be: an extended service request (Extended Service Request) message, a data service request (Data Service Request) message, a Control Plane Service Request message, or a signaling plane service request (Signalling Plane Service).
  • the request information may be: an empty bearer identifier, an empty connection context identifier, a connection establishment service type (service type), or a session management (Session Management) message service type.
  • the mobility management network element on the network side When receiving the service request message sent by the terminal, the mobility management network element on the network side obtains the connection establishment request information in the service request message, and establishes a data transmission connection for the terminal according to the connection establishment request information, that is, establishes a packet data network PDN connection. .
  • the mobile management network element receives the service request message sent by the terminal, which is equivalent to encapsulating the PDN connection establishment process between the terminal and the mobility management network element in the NAS signaling process, and the two NAS processes that are required to be executed in the prior art. (ie, an initial NAS signaling process and a PDN connection establishment process) are combined into one process. Compared with the prior art, the signaling overhead can be reduced on the one hand, and the delayed data transmission can be avoided on the other hand. To reduce the consumption of terminal power.
  • system and “network” are used interchangeably in this application.
  • the term “and/or” in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations.
  • the character "/" in this article generally indicates that the contextual object is an "or" relationship.
  • FIG. 1 is a schematic diagram of a scenario application according to an embodiment of the present application;
  • FIG. 1 includes: a terminal 100, a mobility management network element 200, and a serving gateway (Serving GateWay, S-GW) 300 and packet data network gateway PDN GW 400.
  • FIG. 1 is an example in which the mobility management network element is an MME.
  • the terminal 100 For the uplink data transmission, when the terminal 100 acquires the request message sent by the application that needs to send the uplink user data, the terminal 100 sends a service request message to the MME 200. Specifically, the terminal sends a service request message encapsulating the PDN connection setup request message to the MME 200.
  • the PDN GW 400 sends a PDN connection establishment request to the MME 200, and the MME 200 initiates a paging request to the terminal 100.
  • the terminal 100 After the terminal receives the paging request message sent by the MME 200, the terminal 100 sends a PDN connection establishment request.
  • the service request message of the message is sent to the MME 200.
  • the MME 200 establishes a data transmission connection for the terminal 100 according to the service request message sent by the terminal 100.
  • connection establishment method for data transmission is provided, and the method is applied to a terminal. As shown in FIG. 2, the terminal is in a registration state and the terminal is not established for data transmission.
  • the connection context, the method can include the following steps:
  • step S210 the terminal acquires a data transmission request message or receives a paging message.
  • the data sending request message may be an uplink data sending request message sent by the application on the terminal;
  • the paging message is a paging message sent by the mobility management network element, where the paging message carries indication information, where the indication information is used for moving
  • the terminal is instructed to initiate connection establishment for data transmission to the mobility management network element.
  • the PDN GW triggers a PDN connection establishment request to the mobility management network element, and the mobility management network element initiates a paging request to the terminal, and the terminal receives the paging sent by the mobility management network element in the network side.
  • the terminal sends a service request message to the mobility management network element, so that the mobility management network element establishes a data transmission connection for the terminal according to the service request message sent by the terminal.
  • step S220 the terminal sends a service request message to the mobility management network element.
  • step S230 the terminal establishes a connection for data transmission with the mobility management network element.
  • the service request message includes indication information and connection establishment request information, where the indication information is used to instruct the mobility management network element to establish a connection for data transmission, and the connection establishment request information is used by the mobility management network element to initiate establishment of a connection for data transmission. request.
  • the service request message may be: an extended service request message, a data service request message, a control plane service request message, or a signaling plane service request message.
  • the indication information may be: an empty bearer identifier, an empty connection context identifier, a connection establishment service type, or a session management message service type.
  • the mobility management network element may be: a mobility management entity MME, a serving general packet radio service support node SGSN, or a cellular IoT service gateway network element C-SGN.
  • the connection establishment request information may be specifically a NAS message container, where the NAS message container includes a connection request message initiated by the terminal for data transmission, and the connection request message may specifically be: a packet data network PDN connection request message; or a packet data protocol PDP context.
  • Create a request message In the 4G network, the connection request message is a PDN connection setup request message; in a 2G or 3G network, the connection request message is a PDP context setup request message.
  • a method for establishing a connection for data transmission is provided.
  • the method is applied to a mobility management network element. As shown in FIG. 3, the method may include the following steps:
  • step S310 the mobility management network element receives the service request message sent by the terminal.
  • the service request message includes indication information and connection establishment request information, where the indication information is used to instruct the mobility management network element to establish a connection for data transmission, and the connection establishment request information is used by the mobility management network element to initiate establishment of a connection for data transmission. request;
  • the service request message may be: an extended service request message, a data service request message, a control plane service request message, or a signaling plane service request message.
  • the connection establishment request information may be specifically a NAS message container, where the NAS message container includes a connection establishment request message initiated by the terminal for data transmission.
  • the connection establishment request message may be specifically: a packet data network PDN connection establishment request message; or a packet data protocol PDP context establishment request message.
  • the connection establishment request message is a PDN connection establishment request message; in the 2G or 3G network, the connection establishment request message is a PDP context establishment request message.
  • step S320 the mobility management network element establishes a connection for data transmission for the terminal according to the connection establishment request information carried in the service request message.
  • the mobility management network element When the mobile management network element receives the service request message, the mobility management network element extracts the indication information in the service request message, and obtains the connection establishment request message in the NAS message container according to the indication information.
  • the indication information may be specifically: an empty bearer identifier, an empty connection context identifier, a connection establishment service type, or a session management message service type.
  • the mobility management network element may be: MME, SGSN, or C-SGN.
  • the mobility management network element establishes a data transmission connection with the terminal according to the connection establishment request message, and establishes a packet data network PDN connection in the 4G network, and establishes a packet data protocol PDP context (PDP context) in the 2G or 3G network.
  • the mobile management network element receives the service request message sent by the terminal, which is equivalent to encapsulating the PDN connection establishment process between the terminal and the mobility management network element in the NAS signaling process, and the two NASs that are originally required to be executed in the prior art.
  • the process ie, an initial NAS signaling process and a PDN connection establishment process
  • the process is combined into a process, which can reduce the signaling overhead on the one hand and delay the transmission of data on the other hand. It can reduce the consumption of the terminal power.
  • the method may further include the following steps:
  • step S330 the mobility management network element sends a paging message to the terminal.
  • the paging message carries the indication information, where the indication information is used to initiate the connection establishment for the data transmission to the mobility management network element when the downlink data is sent in the mobility management network element.
  • the PDN GW For downlink data transmission, the PDN GW triggers a PDN connection establishment request to the mobility management network element, and the mobility management network element sends a paging message to the terminal.
  • the method may further include the following steps:
  • step S301 the mobility management network element receives a connection establishment request for data transmission sent by the preset network element.
  • step S302 the mobility management network element receives the indication information that the network side sent by the preset network element has downlink data transmission.
  • the preset network element here may be: a gateway network element or a network element having a service capability opening function.
  • the present invention relates to a connection establishment method for data transmission.
  • the terminal needs to send uplink data to the network side, or the network side needs to send downlink data to the terminal
  • the terminal sends a service request message to the mobility management network element in the network side.
  • the mobile management network element receives the service request message sent by the terminal, and the service The service request message includes indication information and connection establishment request information, and the mobility management network element establishes a data transmission connection between the terminal and the mobility management network element according to the service request message, so that the terminal sends uplink data to the mobility management network element, or the mobile management network The element sends downlink data to the terminal.
  • the two NAS processes that need to be executed ie, an initial NAS signaling process and a PDN connection establishment process
  • the two NAS processes that need to be executed are combined into one process, which can reduce the signaling overhead on the one hand, and avoid the delayed data transmission on the other hand. At the same time, it can also reduce the consumption of the terminal power.
  • the embodiment of the present application provides a connection establishment method for data transmission, in which both the terminal and the mobility management network element support initial attachment, and the default PDN connection optimization is not established, and the terminal has successfully registered to the mobility management.
  • step 2001 the terminal acquires a request message sent by the application.
  • the application in the terminal needs to send uplink data to the network side, the application sends a request message to the terminal.
  • the terminal sends a Service Request message to the mobility management network element, where the service request message is used to change the terminal from the idle state to the connected state.
  • the service request message includes indication information and connection establishment request information.
  • the indication information is used to instruct the mobility management network element to establish a connection context for data transmission.
  • the terminal when the terminal is in an idle state, if it is required to send data to the network side, or the terminal needs to receive data sent by the network side, the terminal sends a service request message to the mobility management network element, and the service request message includes indication information and Connection establishment request information.
  • the indication information may be an EPS bearer identity or a context identity, and is used to indicate to the mobility management network element that the terminal is currently in an idle state, and the terminal does not currently have an active EPS.
  • the bearer context needs to instruct the mobility management network element to establish a connection context for data transmission to implement data transmission between the terminal and the network side.
  • the indication information may be a service type of a session between the terminal and the network side, and is used to instruct the mobility management network element to initiate a process of establishing a connection context for data transmission.
  • Connection in the service request message The connection establishment request information may be a NAS message container.
  • the NAS message container includes an entire PDN Connectivity Request (PDN Connectivity Request) message initiated by the terminal, and the PDN connection establishment request message triggers the mobility management network element to initiate a complete PDN connection establishment procedure.
  • PDN Connectivity Request PDN Connectivity Request
  • the terminal may also use the service request message to send uplink data, and the NAS message container further includes user data.
  • the mobility management network element after receiving the service request message sent by the terminal, the mobility management network element obtains the indication information from the service request message, where the indication information is used to instruct the mobility management network element to initiate establishment for the data.
  • the connection context of the transfer The mobility management network element obtains a PDN Connectivity Request message (PDN Connectivity Request) from the NAS message container according to the indication information.
  • PDN Connectivity Request PDN Connectivity Request
  • step 2004, the mobility management network element initiates a complete PDN connection establishment process to the serving gateway S-GW/PDN GW, thereby completing the PDN connection establishment process between the terminal, the mobility management network element, and the S-GW/PDN GW. Thereby establishing an EPS bearer context.
  • the terminal sends the uplink user data to the mobility management network element, and then the mobility management network element forwards it to the S-GW/PDN GW.
  • a method for establishing a connection for data transmission is provided.
  • the terminal and the mobility management network element both support the initial attachment without establishing a default PDN connection optimization, and the terminal has successfully registered to the mobility management network element, but the terminal The mobile management network element does not establish any PDN connection, and the terminal is in an idle state.
  • This embodiment may include the following steps:
  • step 3001 in conjunction with the above embodiment and FIG. 1, the serving gateway S-GW or the PDN GW obtains a request that the application server needs to send downlink user data to the terminal.
  • step 3002 since the serving gateway S-GW or the PDN GW detects that the terminal does not establish any active state EPS bearer context, it sends a PDN connection establishment request to the mobile management network element currently registered by the terminal; or, the S-GW or The PDN GW sends indication information of downlink data transmission on the network side to the mobility management network element.
  • the mobile management network element sends a paging message to the terminal according to the connection establishment request sent by the S-GW or the PDN GW; or the mobility management network element sends the indication information of the downlink data transmission sent by the network side according to the S-GW or the PDN GW to the terminal. Paging message.
  • the indication information is used to indicate that the mobile management network element of the terminal has downlink data sent to the terminal.
  • step 3003 after receiving the PDN connection establishment request sent by the serving gateway or the PDN GW or the indication information of the downlink data transmission on the network side, the mobility management network element initiates paging for the idle state terminal. And carrying the indication information in the paging message to indicate that the terminal has the downlink data sent by the mobility management network element to the terminal.
  • step 3004 the terminal sends a service request message to the mobility management network element, and the service request changes the terminal from the idle state to the connected state, thereby satisfying the condition initiated by the PDN connection establishment process, where the service request message is found in step 3003.
  • the step may be specifically referred to step 2002 of the embodiment shown in FIG. 6, and details are not described herein again.
  • the mobility management network element after receiving the service request message sent by the terminal, the mobility management network element obtains the indication information and the connection establishment request information from the service request message, where the indication information is used to indicate the mobility management network element. Initiate the establishment of a connection context for data transfer.
  • the mobility management network element obtains a PDN connection establishment request message from the NAS message container according to the indication information.
  • step 3006 the mobility management network element initiates a complete PDN connection establishment procedure to the serving gateway S-GW/PDN GW, thereby completing the PDN connection establishment process between the terminal, the mobility management network element, and the S-GW/PDN GW. Thereby establishing an EPS bearer context.
  • the terminal sends the uplink user data to the mobility management network element, and then the mobility management network element forwards it to the S-GW/PDN GW.
  • the embodiment of the present application integrates two serially executed NAS signaling processes into one NAS signaling process, and optimizes an idle state terminal EPS bearer that supports initial attachment without establishing default PDN connection optimization.
  • the context establishment process only needs to initiate a NAS signaling process to initiate uplink and downlink data transmission, thereby saving signaling overhead and terminal power consumption and improving data transmission efficiency.
  • the present application can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is better.
  • Implementation Based on such understanding, the technical solution of the present application, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for making a A computer device (which may be a personal computer, server, or network device, etc.) performs all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes various types of media that can store program codes, such as a read only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.
  • the embodiment of the present application further provides a connection establishing apparatus, where the apparatus includes a terminal and a mobility management network element.
  • the embodiment of the present application provides a terminal. As shown in FIG. 8, the terminal includes: a transmitter 10, a processor 20, a receiver 30, and a memory 40. among them,
  • the sender 10 is configured to send a service request message to the mobility management network element, where the service request message includes indication information and connection request information, where the indication information is used to instruct the mobility management network element to establish a connection for data transmission,
  • the service request message includes the connection request information, where the connection request information is used by the mobility management network element to initiate a connection for establishing a data transmission;
  • the processor 20 is configured to establish a connection of the data transmission with the mobility management network element.
  • the service request message may be: an extended service request message, a data service request message, a control plane service request message, or a signaling plane service request message.
  • the indication information may be: an empty bearer identifier, an empty connection context identifier, a connection establishment service type, or a session management message service type.
  • the mobility management network element may be:
  • the mobility management entity MME the serving general packet radio service support node SGSN or the cellular IoT service gateway network element C-SGN.
  • the receiver 30 is configured to acquire request information that the application on the terminal needs to send uplink data, or the receiver 30 is configured to receive a paging message sent by the mobility management network element.
  • connection establishment request information may be:
  • the service request message includes a non-access stratum NAS message container, and the NAS message container includes the connection establishment request information.
  • the memory 40 is configured to store instructions executed in the processor.
  • the embodiment of the present application further provides a mobility management network element.
  • the mobility management network element 210 includes: at least one processor 211, at least one bus 212, and at least one a communication interface 213 and at least one memory 214, wherein
  • the memory 214 is for storing computer execution instructions; the memory 214 can include read only memory and random access memory, and provides instructions and data to the processor 211. A portion of the memory 214 may further include a non-Volatile Random Access Memory (NVRAM);
  • NVRAM non-Volatile Random Access Memory
  • the processor 211 is connected to the communication interface 213 and the memory 214 via a bus 212, where
  • the communication interface 213 is configured to receive a service request message sent by the terminal, where the service request message includes indication information and connection establishment request information, where the indication information is used to instruct the mobility management network element to establish a connection for data transmission.
  • the connection establishment request information is used by the mobility management network element to initiate a request for establishing a connection of the data transmission;
  • the processor 211 is configured to establish, by the terminal, the connection of the data transmission according to the connection establishment request information.
  • the communication interface 213 is further configured to send a paging message to the terminal, where the paging message is used to notify the terminal that the mobility management network element has downlink data sent to the terminal.
  • the communication interface 213 is further configured to receive a connection establishment request for data transmission sent by a preset network element, and send a paging message to the terminal according to the connection establishment request sent by the preset network element;
  • the communication interface 213 is further configured to receive indication information that the network side has a downlink data transmission sent by the preset network element, and send a paging message to the terminal according to the indication information sent by the preset network element;
  • the preset network element may be: a gateway network element or a network element with a service capability open function.
  • the service request message may be: an extended service request message, a data service request message, a control plane service request message, or a signaling plane service request message.
  • the connection establishment request information may be: establishing a packet data network PDN connection; or establishing a packet data protocol PDP context.
  • the indication information may be: an empty bearer identifier, an empty connection context identifier, a connection establishment service type, or a session management message service type.
  • the service request message includes a non-access stratum NAS message container, and the NAS message container includes the connection establishment request information.
  • a terminal including: a sending unit 11, a processing unit 12, and a receiving unit 13, wherein
  • the sending unit 11 is configured to send a service request message to the mobility management network element, where the service request message includes indication information and connection establishment request information, where the indication information is used to instruct the mobility management network element to establish a connection for data transmission.
  • the connection establishment request information is used by the mobility management network element to initiate a setup request for the connection of the data transmission.
  • the processing unit 12 is configured to establish a connection of the data transmission with the mobility management network element.
  • the receiving unit 13 is configured to acquire request information that the application on the terminal needs to send uplink data, or receive a paging message sent by the mobility management network element.
  • the paging message includes indication information, where the indication information is used to indicate that the mobile management network element of the terminal has downlink data sent to the terminal.
  • the service request message may be: an extended service request message, a data service request message, a control plane service request message, or a signaling plane service request message.
  • connection establishment request information may be: a packet data network PDN connection establishment request message; or a packet data protocol PDP context establishment request message.
  • the indication information may be: an empty bearer identifier, an empty connection context identifier, a connection establishment service type, or a session management message service type.
  • the service request message includes a non-access stratum NAS message container, and the NAS message container includes the connection establishment request information.
  • a mobility management network element including: a receiving unit 21, a processing unit 22, and a sending unit 23, where
  • the receiving unit 21 is configured to receive a service request message sent by the terminal.
  • the service request message includes indication information and connection establishment request information, where the indication information is used to instruct the mobility management network element to establish a connection for data transmission, and the connection establishment request information is used in the mobility management network.
  • the element initiates a setup request for the connection for the data transfer.
  • the processing unit 22 is configured to establish, according to the connection establishment request information, a connection for the data transmission for the terminal.
  • the sending unit 23 is configured to send a paging message to the terminal.
  • the paging message includes indication information, where the indication information is used to indicate that the mobile management network element of the terminal has downlink data sent to the terminal.
  • the receiving unit 21 is further configured to receive a connection establishment request for data transmission sent by the preset network element.
  • the sending unit 23 is further configured to send a paging message to the terminal according to the connection establishment request sent by the preset network element.
  • the receiving unit 21 is further configured to receive indication information that the network side that is sent by the preset network element has downlink data transmission.
  • the sending unit 23 is further configured to send a paging message to the terminal according to the indication information sent by the preset network element.
  • the preset network element may be: a gateway network element or a network element having a service capability opening function.
  • the service request message may be: an extended service request message, a data service request message, a control plane service request message, or a signaling plane service request message.
  • the establishing the connection of the data transmission may be: establishing a packet data network PDN connection; or establishing a packet data protocol PDP context.
  • the indication information may be: an empty bearer identifier, an empty connection context identifier, a connection establishment service type, or a session management message service type.
  • the service request message includes a non-access stratum NAS message container, and the NAS message container includes a
  • the connection establishment request information is described.
  • the transmitting unit 11 in FIG. 10 may be the transmitter 10 in FIG. 8, and the receiving unit 13 may be the receiver 30.
  • the receiving unit 21 and the transmitting unit 23 in FIG. 11 can implement the function of transmitting and receiving data through the communication interface in FIG.
  • the terminal when the terminal needs to send uplink data to the network side, or the network side needs to send downlink data to the terminal, the terminal sends a service request message to the mobility management network element in the network side.
  • the mobile management network element receives the service request message sent by the terminal, where the service request message includes indication information and connection establishment request information, and the mobility management network element establishes a data transmission connection between the terminal and the mobility management network element according to the service request message,
  • the terminal sends the uplink data to the mobility management network element, or the mobility management network element sends the downlink data to the terminal.
  • the two NAS processes that need to be executed ie, an initial NAS signaling process and a PDN connection establishment process
  • the two NAS processes that need to be executed are combined into one process, which can reduce the signaling overhead on the one hand, and avoid the delayed data transmission on the other hand. At the same time, it can also reduce the consumption of the terminal power.
  • connection establishment system for data transmission is further provided, and the system may include the terminal and the mobility management network element in the foregoing embodiment.
  • the application can be described in the general context of computer-executable instructions executed by a computer, such as a program module.
  • program modules include routines, programs, objects, components, data structures, and the like that perform particular tasks or implement particular abstract data types.
  • the present application can also be practiced in distributed computing environments where tasks are performed by remote processing devices that are connected through a communication network.
  • program modules can be located in both local and remote computer storage media including storage devices.

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  • Engineering & Computer Science (AREA)
  • Databases & Information Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé et un dispositif d'établissement de connexion pour une transmission de données. Lorsqu'un terminal doit envoyer des données de liaison montante à un côté réseau, ou lorsque le côté réseau doit envoyer des données de liaison descendante au terminal, le terminal envoie un message de demande de service à un élément de réseau de gestion de mobilité sur le côté réseau ; l'élément de réseau de gestion de mobilité reçoit le message de demande de service envoyé par le terminal, le message de demande de service contenant des informations d'indication et des informations de demande d'établissement de connexion ; et l'élément de réseau de gestion de mobilité établit une connexion de transmission de données entre le terminal et l'élément de réseau de gestion de mobilité d'après le message de demande de service, de sorte que le terminal envoie les données de liaison montante à l'élément de réseau de gestion de mobilité, ou que l'élément de réseau de gestion de mobilité envoie les données de liaison descendante au terminal. Ainsi, ce qui nécessitait auparavant l'exécution de deux processus NAS est désormais combiné en un seul processus. Le surdébit de signalisation peut être réduit. De plus, la transmission de données à retard peut être empêchée, et la consommation d'énergie d'un terminal peut également être réduite.
PCT/CN2016/109710 2016-12-13 2016-12-13 Procédé et dispositif d'établissement de connexion pour une transmission de données Ceased WO2018107368A1 (fr)

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